Door lock



M. A. HUDON May 4, 1965 DOOR LOCK Filed April 1, 1965 INV EN TOR. MAR/E ANTOINETTE Hupou United States Patent 3,181,319 DOOR LOCK Marie Antoinette Hudon, 22 E. 29th St., New York 16, N.Y. Filed Apr. 1, 1963, Ser. No. 269,355 2 Claims. (Cl. 70-14) This invention relates to a portable locking device used by a traveler for locking closet doors, hotel room doors, etc., the locking device being suitable for use on a variety of doors.

Salesmen, vacationers and other travelers are often faced with the problem of providing protection for their valuables when they absent themselves from their hotel room. Usually, they must resort to checking jewels, furs, etc. with the desk clerk who will place them in a special vault. If they do not take this precaution, they must then rely on the security afforded by the regular lock on the room door. Since a number of persons such as chambermaids, porters and the like, generally have pass keys, it is sometimes possible for unauthorized persons to come into possession of such a pass key in which case the security of a guests room is easily broken. Furthermore, closets within hotel rooms are very rarely equipped with locks so that these spaces which otherwise might be used for storing a guests valuables are not suited for this purpose.

It is, therefore, a primary object of the present invention to provide a locking device for locking doors.

Another object is to provide a locking device for locking doors which is portable and which may be used on a variety of doors of different sizes.

A further object is to provide a locking device which in use seurely locks a door so that it may not be opened except by the person possessing the combination required to unlock the locking device.

A still further object is to provide a portable locking device which is particularly suited for use by travellers in looking the door to their hotel room etc.

Other objects of the present invention will become apparent during the course of the following specification.

The aforementioned objectives of the present invention may be achieved by the provision of a locking device which comprises a thin elongated plate which extends through the space between the door and the door frame along the vertical edge of the door opposite the hinged edge.

The plate is provided with a number of openings at one end wherein may be inserted a retainer bar so that the plate can not be pulled through the opening from outside the space to which the door provides ingress. The plate is also provided with a larger opening at the other end which extends outwardly a distance from the door Wherein may be removably inserted a locking bolt which prevents the plate from being pushed into the space from the outside. The locking bolt is provided with an opening wherein may be inserted a combination lock which secures the locking bolt in place on the plate. Thus the door can neither be opened by pushing it in or by pulling it outwardly. In the former instance the retainer bar prevents movement of the door while in the later case the locking bolt prevents movement of the door.

According to the invention the locking device may be made to fit over door frames in which the jamb has an outstanding or retainer portion. In this case the door is hinged to either open outwardly or inwardly. In this construction the plate is provided with an oifset portion at one end in which is supported several set screws which allow the plate to be secured to the retainer portion of the jamb. When the door is closed up against the jamb, the other end of the plate will extend beyond the door. A combination lock may then be inserted in the projecting 3,181,319 Patented May 4, 1965 portion of the plate and it will prevent the door from being opened.

The invention will appear more clearly from the following detailed description when taken in conjunction with the accompanying drawings showing, by way of example, preferred embodiments of the inventive concept.

In the drawings:

FIGURE 1 is a perspective view illustrating the component parts which comprise a door locking device constructed in accordance with the principles of the present invention.

FIGURE 2 is a front elevational view of the door locking device shown in FIGURE 1 showing the manner in which it is used for locking a door.

FIGURE 3 is a horizontal sectional view as taken along line III-lII of FIGURE 2.

FIGURE 4 is a vertical sectional view as taken along line IVIV of FIGURE 3.

FIGURE 5 is a perspective view of a different form of door locking device which is utilized for locking doors which have an outstanding projection on the door frame.

FIGURE 6 is a top plan view showing the manner in which the locking device illustrated in FIGURE 5 is utilized to lock a door which is swung outwardly to be opened.

FIGURE 7 is the same as FIGURE 6 and shows the use of the locking device for locking a door which is swung inwardly to be opened.

Throughout the specification, like reference numerals are used to indicate like parts.

The locking device 10 illustrated in FIGURES 1 to 4 comprises a thin elongated plate 11 which is preferably made of hardened steel. Since the plate 11 is intended to fit in the opening between a door 12 and the door frame 13 it can not necessarily be too thick. In practice, a thickness of approximately was found adequate for most purposes. The plate 11 must, therefore, be hardened so as to obviate flexure therein. In use the plate 11 is inserted between the door and door frame which provides s access to aspace such as a hotel room and the like. It may also be inserted in a cabinet, closet, etc. wherein there are no projections on the door frame to interfere with its use. The plate is provided with a number of holes 14 at one end and a larger square shaped opening 15 near the other end. The holes 14 are adapted to receive a retainer bar 16 which comprises a male portion 17 and a female portion 18. The retainer bar 16 is intended to be inserted in one of the holes 14 in plate 11 behind the door 12 and spans between the door and its frame 13.

A locking bolt 19 which has a shoulder portion 20 and a bore hole 21 is provided to fit in larger opening 15 of the plate and is positioned outside the door to be locked.

In operation:

Assume that the locking device 10 is to be used for locking a door 12 which, by way of example, may be the access door to a hotel room, or a closet within the room. In either case, the user desires the added security offered by the locking device to prevent unauthorized persons from gaining access to the inside space denoted by letter I in FIGURE 3 from the outside space designated by letter 0. The user first inserts the retainer bar 16 in one of the holes 14 in plate 11 by passing the threaded shank 22 of male portion 17 through the appropriate hole 14 from one side and then screwing the female portion onto the male portion from the other side of the plate. A number of spaced holes 14 are provided so that the locking device may be used with doors of various thicknesses, since it is preferable that the retainer bar be positioned as close against the inner surface of door 12 as possible. Door 12 is then swung outwardly and the plate is positioned against the vertical side of the door frame as shown in FIGURE 3 with the retainer bar positioned on the inside I.- The door 12 is then shut so that it aligns with door frame 13. Looking bolt 19 is then inserted in opening until the shoulder 20 bears against one side face of'the plate 11 in which case opening 21 in the locking bolt will be located on the other side of the plate. A combination lock 23 of a type old and well known in the art is then passed through the opening 21 and locked onto the locking bolt. It is preferable that there be just sufficient clearance between locking bolt 19 and the outer face of the door and door frame to permit the combination lock 23 to be locked onto the locking bolt and abut on the outer face of the door frame. To provide for the foregoing the adjustment holes 14 are provided in plate 11 as previously described. It is apparent that it is now impossible to open 'door 12 since swinging movement is prevented in both an inward and an outward direction. In the former case retainer bar 16 prevents the door from moving while in the latter instance the locking bolt prevents'door movement. The locking device may now be opened only by the user who possesses the combination to lock 23.

The locking device illustrated in FIGURES 5 to 7 is intended for use on doors where the door frame has an outstanding projection which makes a straight through insertion of a plate impossible. The locking device 30 comprises an elongated plate which has'a straight portion 31 and an offset portion 32. Offset portion 32 comprises an inner flange 33 which extends substantially at a right angle with straight plate portion 31, a web 34 extending parallel with straight plate portion 31 and a terminal flange 35 extending parallel to inner flange 33. A pair of set screws 36' and 37 extend through terminal flange 35 in the direction of inner flange 33'.

Straight plate portion 31 is provided with a number of longitudinally spaced holes 38 wherein may be inserted a combination type lock 39 in the manner to be described hereinafter.

The locking device 30 is intended for use with doors that are hung to swing in only one direction for opening, the swing in the other direction being prevented by a projection on the door frame.

Referring to FIGURE 6, door member 40 is hinged to swing to the outside 0' for opening, its swing to the inside I being prevented by reason of the vertical outstanding projection 41 on door frame 42. The user desiring to utilize the locning device 30 as, for example, when leaving his room, opens the door 40 by swinging in the direction of the arrow. He then inserts the looking device on the outstanding projection 41', the offset portion 32 being positioned to enclose the projection. The set screws 36 and 37 are then taken up tight to hold the plate securely in place on projection 41. The door 40 is then shut and a combination type lock 39 passed through one of the openings 38 and locked. It is now impossible for anyone to open door 40 except by first removing combination lock 39.

FTGURE 7 illustrates the use of locking device 30 for locking a door which swings only in an inward direction I" for opening, its swing to the outside 0 being prevented by projection 51 in door frame 52. In this case, the user will mount the offset portion 32 of the plate on the edge of the door and secure it thereto by means of set screws 36 and 37. He then closes the door as he leaves and inserts the combination lock 39 in one of the openings 38. It is now impossible to open the door as any attempted swing thereof will be prevented by the lock 39 hanging upon projection 51.

It is apparent that the locking device of the present invention is particularly suited for use by travelers for locking the door of their hotel room for safeguarding valuables. It is compact in size, easy to carry and install and secure in use.

While there is above disclosed but some embodiments of the locking device, it is possible to produce still other embodiments without departing from the inventive concept herein disclosed.

What is claimed is:

1. A door locking device comprising an elongated plate adapted to extend through the space between a door and its adjacent door frame and beyond both sides of said door when said door is in a closed position, said plate having a plurality of longitudinally arranged openings extending therethrough adjacent one end, said plate having a larger opening extending therethrough adjacent itsother end, a retainer bar removably supported in one of the first-mentioned openings and on one side of said door and engaging said door and said door frame, a locking bolt removably supported in said larger opening and on the other side of said door and engaging said door and said door frame whereby said retainer bar and said locking bolt cooperate to prevent swinging movement of said door relatively to said door frame, and a combination lock for preventing the removal of said locking bolt from said larger opening in said plate.

2. A door locking device comprising an elongated plate adapted to extend through the space between a door and its adjacent door frame and beyond both sides of said door when said door is in'a closed position, said plate having at least one opening extending therethrough adjacent each end of said plate, a retainer bar removably supported in one of said openings and on one side of said door and engaging said door and said door frame, anda locking bolt removably supported in the other of said openings and on the other side of said door and engaging said door and said door frame, whereby said retainer bar and said locking bolt cooperate to prevent swinging movement of said door relatively to said door frame, wherein said retainer bar comprises a male portion having a threaded shank etxending through said opening and having an enlarged portion engaging one side of said plate, and a female portion removably threaded on said shank on the other side of said plate.

References Cited by the Examiner UNITED STATES PATENTS 10,511 2/54 Webb 292-292 413,128 10/89 Brabson -14 583,363 5/97 Dunwald 292-292 584,677 6/97 Doyle 292-292 589,844 9/97 Lownes 70-25 1,168,107 1/16 Oldham 70-14 1,502,933 7/24 Allen 70-14 X 1,549,182 8/25 Church 292-292 2,140,722 12/38 Slayter et al 20-2 2,536,941 l/51 Jones 292-288 2,855,640 10/58 Rolen 20-92.7

FOREIGN PATENTS 148,717 8/20 Great Britain. 372,619 3/ 23 Germany.

ALBERT H. KAMPE, Primary Examiner. 

1. A DOOR LOCKING DEVICE COMPRISING AN ELONGATED PLATE ADAPTED TO EXTEND THROUGH THE SPACE BETWEEN A DOOR AND ITS ADJACENT DOOR FRAME AND BEYOND BOTH SIDES OF SAID DOOR WHEN SAID DOOR IS IN A CLOSED POSITION, SAID PLATE HAVING A PLURALITY OF LONGITUDINALLY ARRANGED OPENINGS EXTENDING THERETHROUGH ADJACENT ONE END, SAID PLATE HAVING A LARGER OPENING EXTENDING THERETHROUGH ADJACENT ITS OTHER END, A RETAINER BAR REMOVABLY SUPPORTED IN ONE OF THE FIRST-MENTIONED OPENINGS AND ON ONE SIDE OF SAID DOOR 